Pocket shelter with a heater
We all have 30-gallon lawn and leaf trash bags in our kitchens or garages. Well get one of these trash bags and put it in your survival kit along with a survival candle or a tea light candle ( I use Tea light candles).
Now when you are cold and need a quick warm place just take out your trusty trash bag and rip a corner of the bag off. Put your face out of the bag (I don't want anyone dying here from suffocation) and sit in a crossed legged fashion inside your trash bag. Take the tea light candle, place it between your legs, and light it.
Be careful not to burn yourself. It will only take about a minute until you want to get out of the bag because of the heat but all you need to do is extinguish the candle and enjoy the warmth!
Repeat as needed.
In addition, your trusty trash bag can be used for many purposes. Filling it with dry leaves for a mattress, using as a rain collector for water…etc. I'm sure you can think of others.